The DC-1720-0735 from ITS Electronics is a Low Noise Block with RF/Input Frequency 17.70 to 19.20 GHz / 19.20 to 20.70 GHz, Output Frequency 950 MHz to 2.45 GHz, Output Power 10 dBm, P1dB 7 to 10 dBm, Gain 35 dB. More details for DC-1720-0735 can be seen below.